"A Shinobi's Will" (忍の意志, Shinobi no Ishi) is chapter 649 of the original Naruto manga.

Summary

Dispersing across the battlefield as soon as they arrive, the five current Kage intend to continue boosting the Allied Shinobi Forces' morale as this was no battle they could afford to lose. As Sasuke and Naruto continue to clash with Obito, who somehow manages to keep them at bay, Shikamaru's treatment progresses slowly, though Sakura is determined to not let him die. Even as they fought, Naruto's Version 1 chakra begins to form around Shikamaru — something Ino later notes was being done by Naruto subconsciously as an extension of his will to protect his friends. Regaining some strength, Shikamaru's memories and feelings are transmitted via Ino's Mind Body Transmission Technique, revealing his own will to be an advisor to Naruto when he takes on the mantle of Hokage as he sits up. As relief spreads throughout the Konoha 11 — none more so than Chōji — Tsunade arrives at their location and expedites Shikamaru's recovery, commending her student for having done so well. Meanwhile, within Kamui's Dimension, a battered but recovering Kakashi tends to his wounds, noting that he was almost set to return to the battlefield. After speaking briefly with her grandfather, Tsunade, A, Gaara, Mei, and Ōnoki all rally the troops across the battlefield before Hashirama gives the final battle cry to the resolute army.